The Lagoon 38 is moderately powered for comfortable coastal cruising.
Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
8.2 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 37.3′, the Lagoon 38 tops out around 8.2 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √37.3′ LWL = 8.2 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
SA / Displacement
16.8
Moderate sail power — a capable coastal cruiser, not overpowered.
Hull Speed
8.2kts
Estimated Speed by Wind
Rough boat speed estimates at different true wind speeds and points of sail — derived from hull speed, SA/D, and displacement, not measured polars.
| Point of Sail | 6 kts TWS | 10 kts TWS | 15 kts TWS | 20 kts TWS |
|---|---|---|---|---|
| Close-hauled40–50° | 3.2 | 4.1 | 4.6 | 4.8 |
| Close Reach60° | 3.9 | 5.0 | 5.5 | 5.8 |
| Beam Reach90° | 4.8 | 6.1 | 6.8 | 7.1 |
| Broad Reach120–135° | 4.5 | 5.6 | 6.3 | 6.6 |
| Run150–180° | 3.6 | 4.5 | 5.0 | 5.2 |
These are simplified estimates based on hull speed (8.2 kts),
SA/D (16.8), and empirical efficiency curves — not instrument-measured
polars. Real-world speed varies with sea state, bottom condition, sail trim, and current.
Speeds in gold approach hull speed;
bold gold means near or at hull speed.
Wind Range & Comfort Envelope
Estimated wind ranges for comfortable sailing on the Lagoon 38 — based on sail area, ballast, and displacement characteristics.
Ghosting
0–7 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
7–20 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
20–28 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
28+ kts
Storm conditions. Storm jib or bare poles. Seek shelter if coastal.
How It Compares
Side-by-side with the boats most often cross-shopped against the Lagoon 38.
| Lagoon 38 | Bali 43 | |
|---|---|---|
| Dimensions | ||
| LOA | 43.0 | 43.0 |
| LWL | 37.3 | 41.3 |
| Beam | 21.8 | 23.4 |
| Displacement | 22 | 24 |
| Sail Area | 836 | 1,010 |
| Performance | ||
| SA/Disp | 16.8 | 19.0 |
| Comfort | — | 13.7 |
| Capsize | — | 3.21 |
| Hull Speed | — | 8.6 |